[Prevention of thrombo-embolic accidents after pneumonectomy (author's transl)].

The authors analyzed the progress in the prevention of thrombo-embolic risk in 550 pneumonectomies divided chronologically in 4 groups : without anticoagulant treatment, with post-operative anti-vitamin K, with post-operative calcium heparinate, with pre and post-operative calcium heparinate. This study revealed the necessity of a pre-operative systematic preventive treatment : systematic, as there is no biological reason enabling the prevention of thrombosis risk. Pre-operative, because venous thrombosis and pulmonary embolism can occur very early.